public AuthorizationCommand(BankLibrary.ATM atm) : base(atm) { }
public CheckBalanceCommand(BankLibrary.ATM atm) : base(atm) { }
protected Command(BankLibrary.ATM atm) { this.atm = atm; }
public ExitCommand(BankLibrary.ATM atm) : base(atm) { }
public TransferCommand(BankLibrary.ATM atm) : base(atm) { }